In
Greek mythology, a phoenix or phenix (Greek:
φοῖνιξ phoinix; Latin: phoenix, phœnix, fenix) is a
long-lived bird that is cyclically regenerated or reborn

PHENIX (PHENotype Imputation eXpediated) is
the name of our method for imputing missing phenotypes
where samples have an arbitrary level of relatedness. The
method can also be used for dimensionality reduction of
multiple traits in related samples. The resulting latent
traits can be tested as phenotypes, and can result in an
increase in power.